pneumonia, medical concept, showing human lungs and close-up view of microbes in lungs

3d adult aeruginosa air anatomical anatomy aureus bacteria biology body bordetella breathing bronchi bronchitis concept conceptual flu haemophilus health human illustration infection influenza influenzae internal klebsiella larynx lungs male man medical medicine microbe microorganism mrsa mycrobacterium organ pathogen pathology pertussis pneumonia pseudomonas realistic respiration respiratory science staphylococcus system trachea tuberculosis xray